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How to adjust the laser resonator of automatic laser welding machine

How to adjust the laser resonator of automatic laser welding machine

(Summary description)Laser is a collection of light amplification generated by particle number inversion after the medium is excited. If there is no resonator, the generated light will quickly escape in different directions and cannot form laser.

How to adjust the laser resonator of automatic laser welding machine

(Summary description)Laser is a collection of light amplification generated by particle number inversion after the medium is excited. If there is no resonator, the generated light will quickly escape in different directions and cannot form laser.

Information

Laser is a collection of light amplification generated by particle number inversion after the medium is excited. If there is no resonator, the generated light will quickly escape in different directions and cannot form laser. Therefore, the laser of the Automatic laser welding machine must be There are resonators.

Automatic laser welding machine

The adjustment of the automatic laser welding machine must be carried out by specially trained personnel, otherwise other components on the optical path will be damaged due to the misalignment or polarization adjustment of the laser. The adjustment steps of the resonant cavity of the laser welding machine are as follows:

1. Check the reference light source of the Automatic laser welding machine: the red semiconductor laser is the reference of the entire light path, first ensure its accuracy. Use a simple height gauge to check whether the red light is parallel to the top surface of the optical bench guide rail, and is on the center line between the two guide rails of the optical bench. If there is any deviation, it can be adjusted by 6 fastening screws. After adjustment, check again whether all the fastening screws have been tightened.

2. Adjust the position of the input mirror (input dielectric diaphragm): Before adjusting the input mirror, the condenser cavity with the YAG rod should be removed, so as not to affect the accuracy of the adjustment due to the refraction of the YAG rod in the optical path. The exact position of the input dielectric diaphragm should be the exit hole where the red light is located and can fully reflect the red light back to the red light, otherwise it should be carefully adjusted through the knob of the diaphragm holder. Note that after the adjustment, the locking ring on the adjustment knob of the diaphragm holder should be completely locked to ensure the stability of its position, and then check again whether the position of the reflected light can remain in the original position.

3. Check the position of the shutter of the Automatic laser welding machine: manually rotate the reflective lens bracket, push the shutter to the light blocking position, observe whether the red light is in the middle of the lens, and whether the reflected light is located on the absorption cone of the beam terminator, If the position is not correct, it can be adjusted slightly, and then, special attention should be paid to carefully check whether the shutter reflector is clean, and the contaminated lens will soon burst during use. At this point, part of the adjustment of the laser welding machine is completed.

4. Check the installation position of the YAG rod: stick the transparent tape on both ends of the YAG rod sleeve respectively, and observe whether the red light spot is in the middle of the two rod sleeves. position is corrected.

5. Adjust the orientation of the all-reflecting mirror (all-reflecting dielectric diaphragm): check whether the red light can be positioned at both ends of the dielectric diaphragm, otherwise, adjust the installation position of the dielectric diaphragm holder so that the red light is in the middle of the dielectric diaphragm, thick Adjust the knob of the dielectric diaphragm holder so that the red light is reflected back to the exit hole. The pulse width of the automatic laser welding machine is adjusted to about 2ms, the repetition frequency is adjusted to 0Hz, and the pulsed xenon lamp is flashed by stepping on the foot switch. Repeatedly adjust the two knobs of the diaphragm holder to make the input spot round and average, and then gradually reduce the current to 120A.

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© 1999-2018 All Rights Reserved 

苏ICP备19073043号

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